Hale, Joseph W. L. (Joseph Woodwell Ledwidge), 1886- · New York [etc.] McGraw-Hill book company · leaf 202
Fig. 168. Fig. 169. of the base of the stack is 54° 30, and the angle of elevation at apoint 50 ft. farther away is 44° 20. Find the height of the stack.10. The angle of elevation of the top of a stack at a point A,as shown in Fig. 171, is 69° 20 and the angle of elevation at a pointB, 50 ft.…
Mechanics, Applied
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